apt-pkg/sourcelist.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: sourcelist.cc,v 1.3 2002/08/15 20:51:37 niemeyer Exp $
   4 /* ######################################################################
   5
   6    List of Sources
   7
   8    ##################################################################### */
   9                                                                         /*}}}*/
  10 // Include Files                                                        /*{{{*/
  11 #include<config.h>
  12
  13 #include <apt-pkg/sourcelist.h>
  14 #include <apt-pkg/error.h>
  15 #include <apt-pkg/fileutl.h>
  16 #include <apt-pkg/strutl.h>
  17 #include <apt-pkg/configuration.h>
  18 #include <apt-pkg/metaindex.h>
  19 #include <apt-pkg/indexfile.h>
  20 #include <apt-pkg/tagfile.h>
  21 #include <apt-pkg/pkgcache.h>
  22 #include <apt-pkg/cacheiterators.h>
  23
  24 #include <ctype.h>
  25 #include <stddef.h>
  26 #include <time.h>
  27 #include <cstring>
  28 #include <map>
  29 #include <string>
  30 #include <vector>
  31 #include <fstream>
  32 #include <algorithm>
  33
  34 #include <apti18n.h>
  35                                                                         /*}}}*/
  36
  37 using namespace std;
  38
  39 // Global list of Items supported
  40 static pkgSourceList::Type *ItmList[10];
  41 pkgSourceList::Type **pkgSourceList::Type::GlobalList = ItmList;
  42 unsigned long pkgSourceList::Type::GlobalListLen = 0;
  43
  44 // Type::Type - Constructor                                             /*{{{*/
  45 // ---------------------------------------------------------------------
  46 /* Link this to the global list of items*/
  47 pkgSourceList::Type::Type(char const * const pName, char const * const pLabel) : Name(pName), Label(pLabel)
  48 {
  49    ItmList[GlobalListLen] = this;
  50    ++GlobalListLen;
  51 }
  52 pkgSourceList::Type::~Type() {}
  53                                                                         /*}}}*/
  54 // Type::GetType - Get a specific meta for a given type                 /*{{{*/
  55 // ---------------------------------------------------------------------
  56 /* */
  57 pkgSourceList::Type *pkgSourceList::Type::GetType(const char *Type)
  58 {
  59    for (unsigned I = 0; I != GlobalListLen; ++I)
  60       if (strcmp(GlobalList[I]->Name,Type) == 0)
  61          return GlobalList[I];
  62    return 0;
  63 }
  64                                                                         /*}}}*/
  65 // Type::FixupURI - Normalize the URI and check it..                    /*{{{*/
  66 // ---------------------------------------------------------------------
  67 /* */
  68 bool pkgSourceList::Type::FixupURI(string &URI) const
  69 {
  70    if (URI.empty() == true)
  71       return false;
  72
  73    if (URI.find(':') == string::npos)
  74       return false;
  75
  76    URI = SubstVar(URI,"$(ARCH)",_config->Find("APT::Architecture"));
  77
  78    // Make sure that the URI is / postfixed
  79    if (URI[URI.size() - 1] != '/')
  80       URI += '/';
  81
  82    return true;
  83 }
  84                                                                         /*}}}*/
  85 bool pkgSourceList::Type::ParseStanza(vector<metaIndex *> &List,        /*{{{*/
  86                                       pkgTagSection &Tags,
  87                                       unsigned int const i,
  88                                       FileFd &Fd)
  89 {
  90    map<string, string> Options;
  91
  92    string Enabled = Tags.FindS("Enabled");
  93    if (Enabled.empty() == false && StringToBool(Enabled) == false)
  94       return true;
  95
  96    std::map<char const * const, std::pair<char const * const, bool> > mapping;
  97 #define APT_PLUSMINUS(X, Y) \
  98    mapping.insert(std::make_pair(X, std::make_pair(Y, true))); \
  99    mapping.insert(std::make_pair(X "Add", std::make_pair(Y "+", true))); \
 100    mapping.insert(std::make_pair(X "Remove", std::make_pair(Y "-", true)))
 101    APT_PLUSMINUS("Architectures", "arch");
 102    APT_PLUSMINUS("Languages", "lang");
 103    APT_PLUSMINUS("Targets", "target");
 104 #undef APT_PLUSMINUS
 105    mapping.insert(std::make_pair("Trusted", std::make_pair("trusted", false)));
 106    mapping.insert(std::make_pair("Check-Valid-Until", std::make_pair("check-valid-until", false)));
 107    mapping.insert(std::make_pair("Valid-Until-Min", std::make_pair("valid-until-min", false)));
 108    mapping.insert(std::make_pair("Valid-Until-Max", std::make_pair("valid-until-max", false)));
 109    mapping.insert(std::make_pair("Signed-By", std::make_pair("signed-by", false)));
 110
 111    for (std::map<char const * const, std::pair<char const * const, bool> >::const_iterator m = mapping.begin(); m != mapping.end(); ++m)
 112       if (Tags.Exists(m->first))
 113       {
 114          std::string option = Tags.FindS(m->first);
 115          // for deb822 the " " is the delimiter, but the backend expects ","
 116          if (m->second.second == true)
 117             std::replace(option.begin(), option.end(), ' ', ',');
 118          Options[m->second.first] = option;
 119       }
 120
 121    // now create one item per suite/section
 122    string Suite = Tags.FindS("Suites");
 123    Suite = SubstVar(Suite,"$(ARCH)",_config->Find("APT::Architecture"));
 124    string const Component = Tags.FindS("Components");
 125    string const URIS = Tags.FindS("URIs");
 126
 127    std::vector<std::string> const list_uris = VectorizeString(URIS, ' ');
 128    std::vector<std::string> const list_suite = VectorizeString(Suite, ' ');
 129    std::vector<std::string> const list_comp = VectorizeString(Component, ' ');
 130
 131    if (list_uris.empty())
 132       // TRANSLATOR: %u is a line number, the first %s is a filename of a file with the extension "second %s" and the third %s is a unique identifier for bugreports
 133       return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "URI");
 134
 135    for (std::vector<std::string>::const_iterator U = list_uris.begin();
 136         U != list_uris.end(); ++U)
 137    {
 138       std::string URI = *U;
 139       if (U->empty() || FixupURI(URI) == false)
 140          return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "URI parse");
 141
 142       if (list_suite.empty())
 143          return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "Suite");
 144
 145       for (std::vector<std::string>::const_iterator S = list_suite.begin();
 146            S != list_suite.end(); ++S)
 147       {
 148          if (S->empty() == false && (*S)[S->size() - 1] == '/')
 149          {
 150             if (list_comp.empty() == false)
 151                return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "absolute Suite Component");
 152             if (CreateItem(List, URI, *S, "", Options) == false)
 153                return false;
 154          }
 155          else
 156          {
 157             if (list_comp.empty())
 158                return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "Component");
 159
 160             for (std::vector<std::string>::const_iterator C = list_comp.begin();
 161                   C != list_comp.end(); ++C)
 162             {
 163                if (CreateItem(List, URI, *S, *C, Options) == false)
 164                {
 165                   return false;
 166                }
 167             }
 168          }
 169       }
 170    }
 171    return true;
 172 }
 173                                                                         /*}}}*/
 174 // Type::ParseLine - Parse a single line                                /*{{{*/
 175 // ---------------------------------------------------------------------
 176 /* This is a generic one that is the 'usual' format for sources.list
 177    Weird types may override this. */
 178 bool pkgSourceList::Type::ParseLine(vector<metaIndex *> &List,
 179                                     const char *Buffer,
 180                                     unsigned int const CurLine,
 181                                     string const &File) const
 182 {
 183    for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
 184
 185    // Parse option field if it exists
 186    // e.g.: [ option1=value1 option2=value2 ]
 187    map<string, string> Options;
 188    if (Buffer != 0 && Buffer[0] == '[')
 189    {
 190       ++Buffer; // ignore the [
 191       for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
 192       while (*Buffer != ']')
 193       {
 194          // get one option, e.g. option1=value1
 195          string option;
 196          if (ParseQuoteWord(Buffer,option) == false)
 197             return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] unparseable");
 198
 199          if (option.length() < 3)
 200             return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] too short");
 201
 202          // accept options even if the last has no space before the ]-end marker
 203          if (option.at(option.length()-1) == ']')
 204          {
 205             for (; *Buffer != ']'; --Buffer);
 206             option.resize(option.length()-1);
 207          }
 208
 209          size_t const needle = option.find('=');
 210          if (needle == string::npos)
 211             return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] not assignment");
 212
 213          string const key = string(option, 0, needle);
 214          string const value = string(option, needle + 1, option.length());
 215
 216          if (key.empty() == true)
 217             return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] no key");
 218
 219          if (value.empty() == true)
 220             return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] no value");
 221
 222          Options[key] = value;
 223       }
 224       ++Buffer; // ignore the ]
 225       for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
 226    }
 227
 228    string URI;
 229    string Dist;
 230    string Section;
 231
 232    if (ParseQuoteWord(Buffer,URI) == false)
 233       return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "URI");
 234    if (ParseQuoteWord(Buffer,Dist) == false)
 235       return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "Suite");
 236
 237    if (FixupURI(URI) == false)
 238       return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "URI parse");
 239
 240    // Check for an absolute dists specification.
 241    if (Dist.empty() == false && Dist[Dist.size() - 1] == '/')
 242    {
 243       if (ParseQuoteWord(Buffer,Section) == true)
 244          return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "absolute Suite Component");
 245       Dist = SubstVar(Dist,"$(ARCH)",_config->Find("APT::Architecture"));
 246       return CreateItem(List, URI, Dist, Section, Options);
 247    }
 248
 249    // Grab the rest of the dists
 250    if (ParseQuoteWord(Buffer,Section) == false)
 251       return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "Component");
 252
 253    do
 254    {
 255       if (CreateItem(List, URI, Dist, Section, Options) == false)
 256          return false;
 257    }
 258    while (ParseQuoteWord(Buffer,Section) == true);
 259
 260    return true;
 261 }
 262                                                                         /*}}}*/
 263 // SourceList::pkgSourceList - Constructors                             /*{{{*/
 264 // ---------------------------------------------------------------------
 265 /* */
 266 pkgSourceList::pkgSourceList() : d(NULL)
 267 {
 268 }
 269                                                                         /*}}}*/
 270 // SourceList::~pkgSourceList - Destructor                              /*{{{*/
 271 // ---------------------------------------------------------------------
 272 /* */
 273 pkgSourceList::~pkgSourceList()
 274 {
 275    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 276       delete *I;
 277 }
 278                                                                         /*}}}*/
 279 // SourceList::ReadMainList - Read the main source list from etc        /*{{{*/
 280 // ---------------------------------------------------------------------
 281 /* */
 282 bool pkgSourceList::ReadMainList()
 283 {
 284    // CNC:2003-03-03 - Multiple sources list support.
 285    bool Res = true;
 286 #if 0
 287    Res = ReadVendors();
 288    if (Res == false)
 289       return false;
 290 #endif
 291
 292    Reset();
 293    // CNC:2003-11-28 - Entries in sources.list have priority over
 294    //                  entries in sources.list.d.
 295    string Main = _config->FindFile("Dir::Etc::sourcelist");
 296    string Parts = _config->FindDir("Dir::Etc::sourceparts");
 297
 298    if (RealFileExists(Main) == true)
 299       Res &= ReadAppend(Main);
 300    else if (DirectoryExists(Parts) == false)
 301       // Only warn if there are no sources.list.d.
 302       _error->WarningE("DirectoryExists", _("Unable to read %s"), Parts.c_str());
 303
 304    if (DirectoryExists(Parts) == true)
 305       Res &= ReadSourceDir(Parts);
 306    else if (RealFileExists(Main) == false)
 307       // Only warn if there is no sources.list file.
 308       _error->WarningE("RealFileExists", _("Unable to read %s"), Main.c_str());
 309
 310    return Res;
 311 }
 312                                                                         /*}}}*/
 313 // SourceList::Reset - Clear the sourcelist contents                    /*{{{*/
 314 // ---------------------------------------------------------------------
 315 /* */
 316 void pkgSourceList::Reset()
 317 {
 318    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 319       delete *I;
 320    SrcList.erase(SrcList.begin(),SrcList.end());
 321 }
 322                                                                         /*}}}*/
 323 // SourceList::Read - Parse the sourcelist file                         /*{{{*/
 324 // ---------------------------------------------------------------------
 325 /* */
 326 bool pkgSourceList::Read(string const &File)
 327 {
 328    Reset();
 329    return ReadAppend(File);
 330 }
 331                                                                         /*}}}*/
 332 // SourceList::ReadAppend - Parse a sourcelist file                     /*{{{*/
 333 // ---------------------------------------------------------------------
 334 /* */
 335 bool pkgSourceList::ReadAppend(string const &File)
 336 {
 337    if (flExtension(File) == "sources")
 338       return ParseFileDeb822(File);
 339    else
 340       return ParseFileOldStyle(File);
 341 }
 342
 343 // SourceList::ReadFileOldStyle - Read Traditional style sources.list   /*{{{*/
 344 // ---------------------------------------------------------------------
 345 /* */
 346 bool pkgSourceList::ParseFileOldStyle(std::string const &File)
 347 {
 348    // Open the stream for reading
 349    ifstream F(File.c_str(),ios::in /*| ios::nocreate*/);
 350    if (F.fail() == true)
 351       return _error->Errno("ifstream::ifstream",_("Opening %s"),File.c_str());
 352
 353    std::string Buffer;
 354    for (unsigned int CurLine = 1; std::getline(F, Buffer); ++CurLine)
 355    {
 356       // remove comments
 357       size_t curpos = 0;
 358       while ((curpos = Buffer.find('#', curpos)) != std::string::npos)
 359       {
 360          size_t const openbrackets = std::count(Buffer.begin(), Buffer.begin() + curpos, '[');
 361          size_t const closedbrackets = std::count(Buffer.begin(), Buffer.begin() + curpos, ']');
 362          if (openbrackets > closedbrackets)
 363          {
 364             // a # in an option, unlikely, but oh well, it was supported so stick to it
 365             ++curpos;
 366             continue;
 367          }
 368          Buffer.erase(curpos);
 369          break;
 370       }
 371       // remove spaces before/after
 372       curpos = Buffer.find_first_not_of(" \t\r");
 373       if (curpos != 0)
 374          Buffer.erase(0, curpos);
 375       curpos = Buffer.find_last_not_of(" \t\r");
 376       if (curpos != std::string::npos)
 377          Buffer.erase(curpos + 1);
 378
 379       if (Buffer.empty())
 380          continue;
 381
 382       // Grok it
 383       std::string const LineType = Buffer.substr(0, Buffer.find(' '));
 384       if (LineType.empty() || LineType == Buffer)
 385          return _error->Error(_("Malformed line %u in source list %s (type)"),CurLine,File.c_str());
 386
 387       Type *Parse = Type::GetType(LineType.c_str());
 388       if (Parse == 0)
 389          return _error->Error(_("Type '%s' is not known on line %u in source list %s"),LineType.c_str(),CurLine,File.c_str());
 390
 391       if (Parse->ParseLine(SrcList, Buffer.c_str() + LineType.length(), CurLine, File) == false)
 392          return false;
 393    }
 394    return true;
 395 }
 396                                                                         /*}}}*/
 397 // SourceList::ParseFileDeb822 - Parse deb822 style sources.list        /*{{{*/
 398 // ---------------------------------------------------------------------
 399 /* Returns: the number of stanzas parsed*/
 400 bool pkgSourceList::ParseFileDeb822(string const &File)
 401 {
 402    pkgUserTagSection Tags;
 403    unsigned int i = 1;
 404
 405    // see if we can read the file
 406    FileFd Fd(File, FileFd::ReadOnly);
 407    pkgTagFile Sources(&Fd);
 408    if (_error->PendingError() == true)
 409       return _error->Error(_("Malformed stanza %u in source list %s (type)"),i,File.c_str());
 410
 411    // read step by step
 412    while (Sources.Step(Tags) == true)
 413    {
 414       if(Tags.Exists("Types") == false)
 415          return _error->Error(_("Malformed stanza %u in source list %s (type)"),i,File.c_str());
 416
 417       string const types = Tags.FindS("Types");
 418       std::vector<std::string> const list_types = VectorizeString(types, ' ');
 419       for (std::vector<std::string>::const_iterator I = list_types.begin();
 420         I != list_types.end(); ++I)
 421       {
 422          Type *Parse = Type::GetType((*I).c_str());
 423          if (Parse == 0)
 424          {
 425             _error->Error(_("Type '%s' is not known on stanza %u in source list %s"), (*I).c_str(),i,Fd.Name().c_str());
 426             return false;
 427          }
 428
 429          if (!Parse->ParseStanza(SrcList, Tags, i, Fd))
 430             return false;
 431
 432          ++i;
 433       }
 434    }
 435    return true;
 436 }
 437                                                                         /*}}}*/
 438 // SourceList::FindIndex - Get the index associated with a file         /*{{{*/
 439 // ---------------------------------------------------------------------
 440 /* */
 441 bool pkgSourceList::FindIndex(pkgCache::PkgFileIterator File,
 442                               pkgIndexFile *&Found) const
 443 {
 444    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 445    {
 446       vector<pkgIndexFile *> *Indexes = (*I)->GetIndexFiles();
 447       for (vector<pkgIndexFile *>::const_iterator J = Indexes->begin();
 448            J != Indexes->end(); ++J)
 449       {
 450          if ((*J)->FindInCache(*File.Cache()) == File)
 451          {
 452             Found = (*J);
 453             return true;
 454          }
 455       }
 456    }
 457
 458    return false;
 459 }
 460                                                                         /*}}}*/
 461 // SourceList::GetIndexes - Load the index files into the downloader    /*{{{*/
 462 // ---------------------------------------------------------------------
 463 /* */
 464 bool pkgSourceList::GetIndexes(pkgAcquire *Owner, bool GetAll) const
 465 {
 466    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 467       if ((*I)->GetIndexes(Owner,GetAll) == false)
 468          return false;
 469    return true;
 470 }
 471                                                                         /*}}}*/
 472 // CNC:2003-03-03 - By Anton V. Denisov <avd@altlinux.org>.
 473 // SourceList::ReadSourceDir - Read a directory with sources files
 474 // Based on ReadConfigDir()                                             /*{{{*/
 475 // ---------------------------------------------------------------------
 476 /* */
 477 bool pkgSourceList::ReadSourceDir(string const &Dir)
 478 {
 479    std::vector<std::string> ext;
 480    ext.push_back("list");
 481    ext.push_back("sources");
 482    std::vector<std::string> const List = GetListOfFilesInDir(Dir, ext, true);
 483
 484    // Read the files
 485    for (vector<string>::const_iterator I = List.begin(); I != List.end(); ++I)
 486       if (ReadAppend(*I) == false)
 487          return false;
 488    return true;
 489
 490 }
 491                                                                         /*}}}*/
 492 // GetLastModified()                                            /*{{{*/
 493 // ---------------------------------------------------------------------
 494 /* */
 495 time_t pkgSourceList::GetLastModifiedTime()
 496 {
 497    vector<string> List;
 498
 499    string Main = _config->FindFile("Dir::Etc::sourcelist");
 500    string Parts = _config->FindDir("Dir::Etc::sourceparts");
 501
 502    // go over the parts
 503    if (DirectoryExists(Parts) == true)
 504       List = GetListOfFilesInDir(Parts, "list", true);
 505
 506    // calculate the time
 507    time_t mtime_sources = GetModificationTime(Main);
 508    for (vector<string>::const_iterator I = List.begin(); I != List.end(); ++I)
 509       mtime_sources = std::max(mtime_sources, GetModificationTime(*I));
 510
 511    return mtime_sources;
 512 }
 513                                                                         /*}}}*/
 514